1865.] 149 



Trypoxylon succinctum, n. sp. 



Black; metathorax and the three basal segments of abdomen, except a large 

 black spot above, honey-yellow: wings hyaline, beautifully iridescent; face 

 :md pleura silvery. 



Female — Black; face densely clothed with brilliant silvery pube- 

 scence, filling up the deep emarginations of the eyes ; cheeks silvery ; 

 antennae piceous above, ferruginous beneath. Thorax minutely punc- 

 tured, shining; a transverse line in front of the niesothorax, a line over 

 the tegulae, and a patch on each side of the scutelluui. of silvery pu- 

 bescence ; pleura rather densely clothed with silvery pubescence ; meta- 

 thorax honey-yellow, blackish at the base above, which is finely and 

 obliquely striated, the posterior face rather deeply channelled, aud 

 clothed with a bright silver}^ pubescence, more dense towards the tip ; 

 tegulae pale testaceous. Wings hyaline, beautifully iridescent; ner- 

 vures blackish. Legs, including the coxae, honey-yellow ; tips of the 

 intermediate tibiae and their tarsi, tips of the posterior femora and their 

 tibiae and tarsi entirely, more or less dusky. Abdomen shining, clothed 

 with a very fine, thin, glittering pubescence, more obvious towards the 

 tip ; the three basal segments honey-yellow, each with a large transverse 

 black spot on their dorsal surface, that on the first segment on its apical 

 third ; apical segments black, except the basal margin of the fourth 

 segment, which is honey-yellow. Length oj lines ; expanse of wings 

 Ah lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Genus OXYBELUS, Latr. 

 Oxybelns analis, n. sp. 



Black: mandibles, tegulae and apex of abdomen, fulvous; face silvery: line 

 on collar, tubercles, sides of scutellum, and a transverse line on each side of 

 the four basal segments of abdomen, whitish : wings hyaline ; metathorax 

 armed at base with a long bifid mucro. 



Female. — Black, finely punctured, slightly pubescent, the face cov- 

 ered with a silvery down, very bright when viewed from above ; man- 

 dibles yellowish at base, fulvous in the middle and piceous at tips ; 

 eyes large, brown ; antennae black, the middle broadly ferruginous, tip 

 of the scape yellowish. Thorax finely and closely punctured, slightly 

 pubescent; niesothorax faintly tinged with bronze; an interrupted line 

 ou the collar, tubercles, a small spot on each of the scutellum at base, 

 and the squama on the posterior margin of the scutellum. whitish, the 

 latter with an acute central longitudinal carina : metathorax truncate be- 

 hind, shining, irregularly striated, with acute elevated lines and a deep 

 excavation beneath the mucro. which is rather long, dilated towards 

 the apex, hollowed above and deeply emarginate at tip; tegulae rufo- 



